The star called Us from New Orleans on the fifth anniversary of Hurricane Katrina; working with charity the St. Bernard Project, Lutz helped build five houses in seven days for the still-recovering city.

"We were working around the clock at 50 hours at a time in different shifts," Lutz marveled. "We got it done just in time. We had so many people come out and lend a helping hand. It was so touching.

He'll be back in Louisiana when Breaking Dawn begins filming in Baton Rouge. "I'm hoping to truck down and work with the St. Bernard Project [there] as well. Hopefully I'll be bring some other cast members too."

Cast members like...Robert Pattinson? "It would be a great surprise for everyone," Lutz said, laughing. "Although I would have to take video of Rob trying to hammer a nail, he might hurt himself